Juvenile tiring



Aug. 8, 1933- H. B. SOULEN 1,921,548

JUVENILE TIRING Filed March 9, 1932 I N VEN TOR.

BY HHRRY 5. Scuba/v LZ/W'N d/ 77% ATTORNEY 6.

- portion. There is a constant tendency for the tire" to straighten itself and this tendency must be re-' Patented Aug. 8, 1933 'UNITED STA JUVENILE TIRING I is Harry B. Soulcn, Milwaukee,"Wis.,' assignor to:

Charles A. Dana and John B. Pierce, receivers for The Fisk Rubber Company, Chicopee' Falls, Mass., a Corporation of Massachusetts Application March 9. i932. s'e'r'm No.597,63 7 olai s. (cl. 15%1) This invention relates to improvements in rubber tiring for juvenile vehicles such asscooters.

miniature automobiles, wagons,

and the like. p

Ithas for. its object increased life, more efficient operation and greater facility in mounting baby carriages such tires. Other and more specific objects will be apparent from the following specification andclaims.

In the accompanying drawing which illustrates an embodiment of the invention, a

, Fig. 1 is a side elevation of a fragment of the improved tiring; V 1

Fig. 2 is a fragmentary side view showing the tiring mountedon the wheel of a juvenile vehicle;

Fig. 3 is a section substantially on line 3 3 of Fig. 2; 7

Fig. 4 is a view similar to Fig. 2 showing a modified form; g

Fig. 5 is a cross-sectional view form online 5-5 of Fig. 4; and r Fig. 6 is a cross-sectional view'showing still another modified form. 1

Tiring of this character is customarily formed by extruding a suitable rubber compound through a die producing long lengths of the tiring, which is generally round in cross-section and provided with a small longitudinal opening to accommodate a wire or similar means by which the tire is held onto the wheel.

Tires of this character present several problems. Since the tiring'is straight as it comes from the extruding die, itsbending to fit the curvature of the wheel stretches the tread por- 7 tion and compresses the inner periphery or base sisted' by the wire which must be drawn very tight if the tire is to be kept on the wheel; in

other words, the wire exerts a radial pressure on the underlying rubber sufficient to counteract the compression due to the bending of the tire which latter compression tends to cause the tire to leave the wheel in seeking to relieve itself of this bending compression. This has necessitated the placing of the wire somewhat above the centerof the tire and the use of stifif stocks, to prevent the wire from cutting through the tire'. I This increased stifiness of the stock tends to increase the bending resistance. As a result this type of tiring is difiicult to mount, particularly onwheels,

of small diameter, and diflicult' to keep inplace,

and their useful life is substantially lessthan a: the modified the pat-am life of thestock fro whichthey o at c--1 I;

2 e err to s-J andb. v pr n s t p t 1 vide the tiring} designated at .1. with-transverse grooves, forming.corrugations as at 2, as wellas the customary wire receiving longitudinal opening 3.- These corrugations are preferably formed as part of the extruding operation andarerelatively'narrow; ;,that is, their longitudinal width is not suflicient to produce any abrupt changeof 5. curvature at thetread whenthe tiring. is bent around; the wheel. The spaces 4 between the, corrugations 2 meat least equal in width. to V the corrugations and preferably somewhat wider. Thesurfaces-of the corrugations and the intervening spaces are preferably curved; 1The-. tiring may be and preferablyis provided .with a. tread design as indicated at 6, the fiat tre'adsur g facdcooperating; with the flexibility ofthe base portion tostabilizethe tire on the, rim. 1 7,.

.In; the form shown in Figs. 1, 2 and 3Rth6 grooves between the corrugationsare cut. suffii cientlydeepias to extend above the rim 7 .of the wheel 8 when the tire is mounted.--. This has the advantage that it, adds somewhat ;to i-the re-; silience of thetire but in many cases it isprefer-f able to keep the corrugations within the confines of the rim as shown in Figs. 4 and 5. As shown in the latter figures, the tire 10 is slightly under cut at the sides, forming seats 11 for the rim edges 12, the seats 11 being positioned at the base of the corrugations 13 so thatthe latter lie wholly within the rim as shown in Fig. 4'. The-tire 10 is provided with tread 14 and wire receiving opening 15 similar to the structureof the tire previously described. l

A further modification. is shown in Fig. 6, in which-the spaces 22 between the corrugations I extend upwardly into the body of the tiring 21 to a point above the rim edges 12as in the fir'st .95 3 form described but the sidewalls of the tiring are extended below the rim edges as at 23 'sothat the sides of the openings are completely closed by the rim. This construction has theadvantage of increased flexibility and resilience above the106 rim and at the same time prevents the entrance of foreign substance into the spaces 22.

I have found that in tires constructed according, to my invention, the compression which tends V to force the tire, from the wheel is substantially eliminated and" theretaining wire indicated at] 20 in the drawing therefore'has no tendency to cut throughand destroythe tire. Theitiring of my invention maybe mounted on wheels of even very .small diameter with surprising ease and 1.

tween'the wire and the rim is reduced to a minimum, thus decreasing the cost of the tire.

Having thus described myinvention, I claim; 1. Tiring forv juvenile vehicles and the I like which comprises a straight length of rubber generally round in cross-section, provided along one 7 side with relatively narrowtrarisverse corrugations, the spaces between said corrugations having a width longitudinally of the tiring at least equal to the longitudinal width of the corrugations, the surfaces of the corrugations being curved, anda longitudinal wire receiving opening positioned' centrally'between the sidewalls of the tiring and slightly above the base of'the corrugations;

2. Tiring for juvenile vehicles and "the like whichcomprises a straight length of rubber generally round in cross-section, provided along one side with a tread surface and along the diametri cally opposite side with relatively narrow trans versecorrugations, the spaces between saidcorrugations having a width, longitudinally of the tiring, at least equal to the longitudinal width of the corrugations, the surfaces of the corrugations being curved, and a longitudinal wire receiving opening positioned centrally between the sidewalls of the tiring and slightly above the baseof the cor- V rugations.

3. Thing for juvenile vehicles and the like which comprises a straight length of rubber-,generally round in cross-section, provided along one side with a tread surface and along the diametrically opposite sh w-1th, relatively narrow trans-= verse corrugations, and a longitudinal 'wire receiving opening positioned intermediate the tread face and the base of the corrugations.

4. Tiringfor juvenile vehicles and the like which'eomprises a straight length of rubber, generallyreund in cross-section, provided along one side with a tread surface and along the diametri cally opposite side with relatively narrow transverse corrugations, the spaces between the corrugations having a width longitudinally of the" tiring at least equal to the longitudinal width of g the corrugations, and a longitudinal wire receiv-- ing opening positioned intermediate the tread face and the base of the corrugations.

5. Tiring for juvenile vehicles and the like which comprises a straight length of rubber generally round in cross-section, provided along one side with a tread surface and along the diametrically opposite side with relatively narrow transverse corrugations, the spaces between said corrugations having a Width, longitudinally'of the tiring, at least equal to the longitudinal width of the rubber intervening between the corrugations, and a depth slightly in excess of the depth of therim on which the tire is to be placed, and a longitudinal wire receiving openingpositioned centrally 'betweenthe' sidewalls of the tiring and ightlyabove the base of the corrugations,

6. Thing for juvenile vehicles and the like which comprises a straight length or" rubber generally round in cross-section, provided along one side with a tread surface and along the diametri cally opposite side with transverse corrugations, the'spaces betweenvsaid corrugations havingv a width, longitudinally of the tiring, at least equal to the longitudinal width of the corrugations, and a depth slightlylesslthan the'depth of the rim on which the tire is to be placed, under outshoulders formed along the sidewalls of the tiring adjacent the baseoi the corrugations to form a seat forthe edges of the wheel. rim, and a'longi tudinal wire receiving opening positioned central ly between the sidewalls of the tiring and slightly I above the base of the corrugations.

"7. AWheel tire comprising a generally cylindrical rubber structure formed on one side with a longitudinal vseries of 'chordal slots, the respective ends of said slots being partly obstructed by' flanges formed in continuation of the side walls of the tire. Y HARRY B. SOULEN. 

